Follow generla eDP backlight enable control sequence. Add T8 (valid video data to backlight enable) delay before turn backlight_enable on. And T9 (backlight disable to end of valida video data) delay after backlight_enable off.
Cc: Ville Syrjälä <[email protected]> Cc: Jani Nikula <[email protected]> Cc: Jose Roberto de Souza <[email protected]> Cc: Cooper Chiou <[email protected]> Signed-off-by: Lee, Shawn C <[email protected]> --- drivers/gpu/drm/i915/intel_dp_aux_backlight.c | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/drivers/gpu/drm/i915/intel_dp_aux_backlight.c b/drivers/gpu/drm/i915/intel_dp_aux_backlight.c index 98210ae17285..b008e887f4e9 100644 --- a/drivers/gpu/drm/i915/intel_dp_aux_backlight.c +++ b/drivers/gpu/drm/i915/intel_dp_aux_backlight.c @@ -217,12 +217,25 @@ static void intel_dp_aux_enable_backlight(const struct intel_crtc_state *crtc_st } intel_dp_aux_set_backlight(conn_state, connector->panel.backlight.level); + + wait_remaining_ms_from_jiffies(intel_dp->last_power_on, + intel_dp->backlight_on_delay); + set_aux_backlight_enable(intel_dp, true); } static void intel_dp_aux_disable_backlight(const struct drm_connector_state *old_conn_state) { + struct intel_connector *connector = to_intel_connector(old_conn_state->connector); + struct intel_dp *intel_dp = enc_to_intel_dp(&connector->encoder->base); + + intel_dp->last_backlight_off = jiffies; + set_aux_backlight_enable(enc_to_intel_dp(old_conn_state->best_encoder), false); + + wait_remaining_ms_from_jiffies(intel_dp->last_backlight_off, + intel_dp->backlight_off_delay); + intel_dp_aux_set_backlight(old_conn_state, 0); } -- 2.7.4 _______________________________________________ Intel-gfx mailing list [email protected] https://lists.freedesktop.org/mailman/listinfo/intel-gfx
